1. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings C h a p t e r 4 The Integumentary System PowerPoint ® Lecture Slides prepared by Agnes Yard and Michael Yard Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

2. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following factors cause wrinkles and sagging skin? a. age b. hormones c. prolonged UV exposure d. all of the above

3. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following statements regarding local regulation after skin injury is/are false? a. Blister site repair in an aged adult of 65 – 75 years old may take 6 – 8 weeks, versus 3 – 4 weeks in young, healthy individuals. b. The formation of fibrous, cellular scar tissue is a practical limit to the healing process. c. After severe damage, the repair process does not return the integument to its original condition. d. Damaged hair follicles, sebaceous glands, sweat glands, and muscle cells are seldom repaired.

4. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which cell type dominates the stratum germinativum? a. basal cells b. melanocytes c. keratinocytes d. Merkel cells

5. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Insensible perspiration accounts for a loss of approximately water/day. a. 250 ml b. 500 ml c. 750 ml d. 1,000 ml

6. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following statements regarding follicular structure of hair is false? a. The external root sheath extends from the skin surface to the hair matrix. b. The glassy membrane is a thin basal lamina, wrapped in a dense connective tissue sheath. c. The cells of the follicle walls are organized into concentric layers. d. None of the above statements is false.

7. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Of the following factors, which is absorbed by UV radiation in sunlight? a. carotene b. keratin c. melanin d. a and b

8. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings “Cradle cap” is a form of: a. eczema b. psoriasis c. seborrheic dermatitis d. xerosis

9. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings A ________ is a small circumscribed elevation of the skin containing fluid. a. vesicle b. scab c. papule d. erythema

10. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which cell type functions in initiating an immune response against pathogens invading the epidermis? a. Merkel cells b. melanocytes c. keratinocytes d. Langerhans cells

11. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which hair type(s) does/do not have a distinct medulla? a. intermediate b. terminal c. vellus d. a and c

12. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Carotene is not: a. converted to vitamin A b. essential for epithelial maintenance c. evident in the dehydrated cells of the stratum spinosum d. essential for the synthesis of visual pigments by the photoreceptors of the eye

13. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings UV radiation in sunlight: a. is essential for normal calcium and phosphorus absorption b. impairs bone maintenance and growth c. increases the rate of vitamin A synthesis d. All of the above

14. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following statements regarding the stratum corneum is true? a. It is found at the surface of both thick and thin skin. b. It consists of 15 – 30 layers of flattened, dead, and interlocking cells. c. The cells are usually shed in large groups or sheets, rather than individually. d. all of the above

15. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which epidermal layer is water resistant, but not waterproof, and is typically relatively dry? a. stratum granulosum b. stratum spinosum c. stratum corneum d. stratum lucidum

16. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Blood flow to the skin is regulated by which of the following? a. respiratory system b. endocrine system c. lymphatic system d. a and c

17. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following is comprised of loose connective tissue with abundant adipocytes? a. papillary layer b. subcutaneous layer c. reticular layer d. germinative layer

18. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings The secretion of sebaceous glands is released through which type of secretion? a. merocrine b. apocrine c. holocrine d. none of the above

19. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which cell types are typically found in the stratum spinosum? a. keratinocytes b. Langerhans cells c. melanocytes d. all of the above

20. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings The epithelial layer involved in hair production is called the hair. a. bulb b. root c. papilla d. matrix

21. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following functions of hair is true? a. provide insulation for the skull b. cushion a blow to the head c. help prevent entry of foreign particles and insects d. all of the above

22. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings The cuticle is not: a.known as the eponychium b. formed by a portion of the stratum corneum of the nail fold c. known as the hyponychium d. b and c

23. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings The functions of the merocrine sweat gland exclude which of the following? a. absorption b. thermoregulation c. protection d. excretion

24. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which type of gland produces a viscous, cloudy, and potentially odorous secretion? a. apocrine sweat gland b. eccrine sweat gland c. sebaceous gland d. ceruminous gland

25. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings Which of the following clinical indications about nail changes is/are true? a. Yellow nails can indicate chronic respiratory disorders, pineal gland disorders, or AIDS. b. Pitted distorted nails can occur in cases of psoriasis. c. Concave nails are indicative of all blood disorders. d. All of the above statements are true.

26. Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings During tissue repair, the combination of blood clot, fibroblasts, and an extensive capillary network is called: a. a scab b. granulation tissue c. a keloid d. scar tissue